▎ 摘　　要

NOVELTY - The nano-sensor has a thermal oxide layer placed on top of a silicon wafer. First and second chromium supporting pads are placed on top of the thermal oxide layer. A gap is available between the chromium supporting pads. A first copper pad is placed on top of the first chromium supporting pad, and a second copper pad is placed on top of the second chromium supporting pad. A copper strip connects the copper pads. A graphene flake connects the copper pads and suspended over a gap between the copper pads. Two metal electrodes are electrically connected to the flake. USE - Graphene nano-sensor for sensing organic molecules e.g. DNA, bifunctional molecules, 1-pyrenebutanoic acid, succinimidyl ester, and layer of native hemin molecules (all claimed), during industrial, environmental and military monitoring purpose. ADVANTAGE - The sensor is suitable for the real-time, ultra-fast sensing of single molecules, and facilitates the dynamical interaction between target molecules and suspended graphene. DETAILED DESCRIPTION - The graphene flake is a quasi-two-dimensional thin film. The surface of the graphene flake is decorated with materials such as Palladium, Boron Carbide, mineral greenockite, Titanium, gold and aluminum. INDEPENDENT CLAIMS are also included for the following: (1) a method for sensing single molecules (2) a method for the determination of the adsorption rate and the desorption rate of a gas on graphene (3) a method for large scale production of suspended graphene devices. DESCRIPTION OF DRAWING(S) - The drawing shows a circuit block diagram of a gas sensing apparatus with electrical feedthroughs and gas flow control. Direct current voltages (Vd, Vg)